package com.atguigu.gulimall.ssoclient.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.client.RestTemplate;

import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.List;

@Controller
public class HelloController {

    @Value("${sso.server.url}")
    String ssoServerUrl;

    /**
     * 无需登录可以访问
     * @return
     */
    @ResponseBody
    @GetMapping("/hello")
    public String hello(){

        return "hello";
    }

    /**
     *
     * @param model
     * @param session
     * @param token 登录成功后认证服务返回的token
     * @return
     */
    @GetMapping("/employees")
    public String employees(Model model, HttpSession session,@RequestParam(value = "token",required = false) String token){

        if (!StringUtils.isEmpty(token)){
            //获取当前token对应的用户信息
               //使用restTemplate调用登录服务获取用户信息
            RestTemplate restTemplate=new RestTemplate();
            ResponseEntity<String> forEntity=restTemplate.getForEntity("http://ssoserver.com:8080/userinfo?token="+token,String.class);
            String body=forEntity.getBody();
            session.setAttribute("loginUser",body);
        }

        Object loginUser = session.getAttribute("loginUser");
        if (loginUser==null){
            //未登录
            return "redirect:"+ssoServerUrl+"?redirect_url=http://client1.com:8081/employees";
        }
        List<String> emps = new ArrayList<>();
        emps.add("张三");
        emps.add("李四");
        model.addAttribute("emps",emps);
        return "list";
    }
}
